fuzzyjk

iTrader: (4)

What is the most cost effective LS1 valve springs that will handle 609 lift "safely"?

conan

iTrader: (5)

Don't skimp on some thing like valve springs. .609 is some prety big lift.
https://www.patriot-performance.com/...&cat=51&page=1

https://ls1tech.com/forums/generation-iii-internal-engine/988306-valve-float.html

2000PewterZ28

Call TSP and get the PRC spring kit.

dadem0n

Depends.... are you only talking about a 224 XFI lobe?

Vndcatr

iTrader: (8)

Is PRC the patriot springs also? ..

99blancoSS

iTrader: (115)

PAC 1518.... the beehive design offers superior valve control, some people dont like single springs as they are paranoid about breakage. PAC say it's not an issue with their springs. I have 1518's for $265 delivered

Vndcatr

iTrader: (8)

Do they guarantee the spring wont fail for a .600 + lift ??

99blancoSS

iTrader: (115)

The spring is rated to .650 lift and is nitrided. It is a true premium valve spring and should be selling for $100 more than I have them offered for. Check out PAC website and see what their prices are on them.
In addition its a true drop in replacement. No seat or seal changes needed and it will use your stock retainer... true drop in replacement

http://www.pacracing.com/Beehive_Spr...Set_of_16.html

http://www.pacracing.com/beehive.html

fuzzyjk

iTrader: (4)

The cam specs are: 226/232 604/609 113+2 LSA

I take it 918's are out?

99blancoSS

iTrader: (115)

Yes 918's are out. You need a spring good to .650 lift

Vndcatr

iTrader: (8)

hmmmm....

99blancoSS

iTrader: (115)

PAC also has all the double and triple springs in the world as well but when I spoke to them and specifically asked what would be best they said the 1518 over the 921 double spring. I spoke at length with them about it. You should call them and ask for yourselves
866-799-9417. I had posted my conversation with them and the specific questions I asked but I cant seem to find it. Anyway I posted the main points in this thread from the conversation. Breakage they said is not an issue.

99_SS_LS1

iTrader: (4)

The cam I am installing this weekend is the same specs. I went with the 1518's

TT610INCH

I Would Run The Manly Nextec Springs! W/titanium Retainers

un17real

+1 on the Patriot dual valve springs would be great for that lift i just put them in my bird the other day